Display Filter Reference: Link Access Procedure, Channel D (LAPD)

Protocol field name: lapd

Versions: 1.0.0 to 3.0.6

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Field name Description Type Versions
lapd.abort Abort Boolean 1.10.0 to 1.10.14
lapd.abort.expert Formatted message Label 1.12.0 to 3.0.6
lapd.address Address Field Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.checksum Checksum Unsigned integer, 2 bytes 1.2.0 to 3.0.6
lapd.checksum.status Checksum Status Unsigned integer, 1 byte 2.2.0 to 3.0.6
lapd.checksum_bad Bad Checksum Boolean 1.2.0 to 2.0.16
lapd.checksum_bad.expert Bad FCS Label 1.12.0 to 3.0.6
lapd.checksum_good Good Checksum Boolean 1.2.0 to 2.0.16
lapd.control Control Field Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.control.f Final Boolean 1.0.0 to 3.0.6
lapd.control.ftype Frame type Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.control.n_r N(R) Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.control.n_s N(S) Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.control.p Poll Boolean 1.0.0 to 3.0.6
lapd.control.s_ftype Supervisory frame type Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.control.u_modifier_cmd Command Unsigned integer, 1 byte 1.0.0 to 3.0.6
lapd.control.u_modifier_resp Response Unsigned integer, 1 byte 1.0.0 to 3.0.6
lapd.cr C/R Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.direction Direction Unsigned integer, 1 byte 1.0.0 to 3.0.6
lapd.ea1 EA1 Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.ea2 EA2 Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.sapi SAPI Unsigned integer, 2 bytes 1.0.0 to 3.0.6
lapd.tei TEI Unsigned integer, 2 bytes 1.0.0 to 3.0.6
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